Ultra Fibre Fortified Floor Levelling Compound (54 bags - Pallet) Ultra Level It FX is a single part floor leveller featuring specially formulated fibre technology. This high strength, rapid curing cementitious smoothing and levelling compound provides a strong, sound and even base. * Polymer modifed * Protein free * Pumpable * Non crack formulation * Suitable for underfloor heating * Delivery to roadside only